package com.banyuan.filter;

import javax.servlet.*;
import java.io.IOException;

public class CharcterFilter implements Filter {
    private String encoding;
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
         encoding = filterConfig.getInitParameter("encoding");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
               servletRequest.setCharacterEncoding(encoding);
               servletResponse.setContentType("text/html;charset="+encoding);
               servletResponse.setCharacterEncoding(encoding);

               filterChain.doFilter(servletRequest, servletResponse);
               //放行
    }

    @Override
    public void destroy() {

    }
}
